Results 31 to 40 of about 5,678 (254)

Pedestrian Intensive Scanning for Active-scan LIDAR

open access: yesProceedings of the 14th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications, 2019
In recent years, LIDAR is playing an important role as a sensor for understanding environments of a vehicle’s surroundings. Active-scan LIDAR is being actively developed as a LIDAR that can control the laser irradiation direction arbitrary and rapidly. In comparison with conventional uniform-scan LIDAR (e.g. Velodyne HDL-64e), Active-scan LIDAR enables
Taiki Yamamoto   +5 more
openaire   +1 more source

Lidar arc scan uncertainty reduction through scanning geometry optimization [PDF]

open access: yesAtmospheric Measurement Techniques, 2015
Abstract. Doppler lidars are frequently operated in a mode referred to as arc scans, wherein the lidar beam scans across a sector with a fixed elevation angle and the resulting measurements are used to derive an estimate of the n minute horizontal mean wind velocity (speed and direction). Previous studies have shown that the uncertainty in the measured
H. Wang   +3 more
openaire   +3 more sources

Performance Assessment of Mobile Rayleigh Doppler Lidars for Middle Atmosphere Research

open access: yesEPJ Web of Conferences, 2016
Recently, two sets of mobile Rayleigh Doppler lidars were implemented in University of Science and Technology of China (USTC) for atmospheric gravity waves research.
Han Yuli, Zhao Ruocan, Sun Dongsong
doaj   +1 more source

Better turbulence spectra from velocity–azimuth display scanning wind lidar [PDF]

open access: yesAtmospheric Measurement Techniques, 2019
Turbulent velocity spectra derived from velocity–azimuth display (VAD) scanning wind lidars deviate from spectra derived from one-point measurements due to averaging effects and cross-contamination among the velocity components.
F. Kelberlau, J. Mann
doaj   +1 more source

Vegetation Scanning Using LiDAR-Based Drone

open access: yesInternational Journal of Scientific Research in Computer Science, Engineering and Information Technology, 2022
Vegetation scanning has become fundamental since it gives pivotal data about the applications, including environmental monitoring, biodiversity conservation, agriculture, forestry, urban green infrastructure, and other related fields. Many remote sensing methods can be used to scan vegetation like SAR imaging, Landsat imaging etc.
null Mrs. Divya V Chandran   +3 more
openaire   +1 more source

Measurement procedures for characterization of wind turbine wakes with scanning Doppler wind LiDARs [PDF]

open access: yesAdvances in Science and Research, 2013
The wake flow produced from an Enercon E-70 wind turbine is investigated through three scanning Doppler wind LiDARs. One LiDAR is deployed upwind to characterize the incoming wind, while the other two LiDARs are located downstream to carry out wake ...
G. V. Iungo, F. Porté-Agel
doaj   +1 more source

Autonomous Mechanical Thinning Using Scanning LIDAR [PDF]

open access: yes2011 Louisville, Kentucky, August 7 - August 10, 2011, 2011
Hand thinning is a labor-intensive and expensive peach production practice. Mechanical thinning has been shown to be an economical method of reducing thinning cost. However, current mechanical thinning systems applied to perpendicular V systems require the operator to constantly steer the tractor to maintain engagement.
Aasted, Matthew   +5 more
openaire   +1 more source

Scanning, Multibeam, Single Photon Lidars for Rapid, Large Scale, High Resolution, Topographic and Bathymetric Mapping

open access: yesRemote Sensing, 2016
Several scanning, single photon sensitive, 3D imaging lidars are herein described that operate at aircraft above ground levels (AGLs) between 1 and 11 km, and speeds in excess of 200 knots.
John J. Degnan
doaj   +1 more source

Vertical profiles of the 3-D wind velocity retrieved from multiple wind lidars performing triple range-height-indicator scans [PDF]

open access: yesAtmospheric Measurement Techniques, 2017
Vertical profiles of 3-D wind velocity are retrieved from triple range-height-indicator (RHI) scans performed with multiple simultaneous scanning Doppler wind lidars.
M. Debnath   +9 more
doaj   +1 more source

2D FPCB micromirror for scanning LIDAR

open access: yesJournal of Micromechanics and Microengineering, 2022
Abstract This paper presents a 2D flexible printed circuit board (FPCB) micromirror and a scanning 3D light detection and ranging (LIDAR) based on it by integrating the 2D FPCB micromirror with a commercially available single point LIDAR.
Trevor S Tai   +2 more
openaire   +1 more source

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